Optimizing Geometric Parameters in Hydrocyclones for Enhanced Separations: A Review and Perspective

Ni, Long; Tian, Jinyi; Song, Tao; Jong, Yongson; Zhao, Junming

doi:10.1080/15422119.2017.1421558

Cited by 87 publications

(27 citation statements)

References 115 publications

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“…However, hydrocyclones have several drawbacks such as the low separation efficiency at low flowrates and high viscosities, the breakage of the droplets at high velocities, and they require a high feed pressure in order to achieve a high centrifugal force [72,73]. Although, it is impossible to achieve a perfect separation of oil from water using the hydrocyclone technique, however, employing multi hydrocyclones in series would significantly enhance the separation efficiency [74].…”

Section: Centrifugation and Hydrocyclonesmentioning

confidence: 99%

Membrane separation as a pre-treatment process for oily saline water

et al. 2018

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Section: Centrifugation and Hydrocyclonesmentioning

confidence: 99%

Membrane separation as a pre-treatment process for oily saline water

et al. 2018

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“…In downhole hydrocyclone, as a key component of the downhole in situ separation system, the performance and flow field characteristics play a decisive role. Hydrocyclones are widely used in various engineering processes because of their simple design, flexible operation, large capacity, and low maintenance costs [12,13]. Flow field characteristics are highly complex multiphase structures in a hydrocyclone.…”

Section: Introductionmentioning

confidence: 99%

“…However, the application of a hydrocyclone to recycle NGH and desand during NGH exploitation is a novel idea, and its performance needs to balance the recovery rate of the NGH outlet and the removal rate of the sand outlet. Nevertheless, the flow field and Hydrocyclones are widely used in various engineering processes because of their simple design, flexible operation, large capacity, and low maintenance costs [12,13]. Flow field characteristics are highly complex multiphase structures in a hydrocyclone.…”

Section: Introductionmentioning

confidence: 99%

A Downhole Hydrocyclone for the Recovery of Natural Gas Hydrates and Desanding: The CFD Simulation of the Flow Field and Separation Performance

Qiu

Wang

et al. 2019

Energies

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The application of a hydrocyclone to recycle NGH and desand during NGH exploitation is a novel idea. The flow field and performance of this hydrocyclone is in the frontier of the research in this field and is unclear so far. This research aimed to reveal the flow field characteristics and performance of NGH downhole hydrocyclones. In this paper, flow field, solid phase particle volume distribution and separation efficiency were investigated according to the two objectives of NGH recovery efficiency and sand removal efficiency with different inlet velocities by computational fluid simulations (CFD)-FLUENT software. The results show that the short circuit flow contributed to the recovery of NGH. Axial velocity is a decisive factor in balancing the two objectives of NGH recovery efficiency and sand removal efficiency. In addition, the same as those in traditional hydrocyclones, the static pressure, tangential velocity and turbulence intensity play key roles in separation performance, hydrocyclone performance can be improved by increasing the inlet velocity. On the other hand, most separation efficiencies were greater than 80%, when the particle size was larger than 15 µm, and the differential pressure was less than 0.6 MPa. Therefore, all the above results confirm that hydrocyclone has good performance in NGH exploitation, and the basis of its structural design and optimization are provided.

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“…A hydrocyclone is an instrument that can effectively separate mixtures of particles with different density or size based on centrifugal sedimentation principles [1][2][3][4][5][6][7]. Once pressurized into a hydrocyclone, powders are separated by separation: coarse/dense particles shift to the sidewall due to relatively large centrifugal forces, join the underflow via an outer swirl and leave via an underflow outlet; fine/sparse particles shift to the core due to relatively small centrifugal forces, join the overflow via an inner swirl and leave via an overflow pipe.…”

Section: Introductionmentioning

confidence: 99%

The Study on Numerical Simulation and Experiments of Four Product Hydrocyclone with Double Vortex Finders

et al. 2018

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A hydrocyclone is an instrument that can effectively separate multi-phase mixtures of particles with different densities or sizes based on centrifugal sedimentation principles. However, conventional hydrocyclones lead to two products only, resulting in an over-wide particle size range that does not meet the requirements of subsequent operations. In this article, a two-stage series, a four product hydrocyclone is proposed. The first stage hydrocyclone is designed to be a coaxial double overflow pipe: under the effect of separation, fine particles are discharged from the internal overflow pipe, while medium-size particles are discharged from external overflow pipe before entering the second stage hydrocyclone for fine sedimentation. In other words, one-stage grading leads to four products, including the first stage underflow, the first stage overflow, the second stage underflow, and the second stage overflow. The effects of structural parameters and operational parameters on flow field distribution in hydrocyclone were investigated via a study of flow field distribution in multi-product hydrocyclones using numerical simulations. The application of four product hydrocyclone in iron recovery shows that the grade and recovery of iron concentrate exceed 65.08% and 86.14%, respectively. This study provides references for understanding the flow field distribution in hydrocyclones and development of multi-product grading instrument in terms of both theory and industrial applications.

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Optimizing Geometric Parameters in Hydrocyclones for Enhanced Separations: A Review and Perspective

Cited by 87 publications

References 115 publications

Membrane separation as a pre-treatment process for oily saline water

Membrane separation as a pre-treatment process for oily saline water

A Downhole Hydrocyclone for the Recovery of Natural Gas Hydrates and Desanding: The CFD Simulation of the Flow Field and Separation Performance

The Study on Numerical Simulation and Experiments of Four Product Hydrocyclone with Double Vortex Finders

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